Machine for ramming paving stones or the like



Feb. 19, 1929.

E. l-l.- cARLssoN MACHINE FOR. AMMING PAVING'4 STONES 0R THE LIKE fFned sept'. 22, 193e :s sheets-sheet 1 E. H. CARLSSON MACHINE FOR RAMMING PAVING STONES OR THE LIKE ,Feb. A19, 1.929.

Filed Sept. 22, 1926 3 Sheets-Sheet 2 v' Attarney.

Sheets-#Sheet V E NTO R Mmm? Feb; 19, 1929.

l E. H. cARLssoN MACHINE FOR RAMMING PAVING STONES OR TuiE LIKE Filed Sept. 22, 1926 'fastened a number of (according to the draw'- ing tour) axial pins 28 movable in longitudinal direction in holes 29 in a locking disc 30, which by means of splines 3l is arranged on the sleeve 2 in such a way that i't'can neither rotate nor slide in relation to the sleeve. Each of the holes 29 enlarges into a large depression 32. The .pins 28, each of which is provided with a head or a shoulder', are acted upon each by its cylindrical helical spring 33, situated inside 'the depression rlhe locking disc' 3() is provided with a groove 2A around its circumference engaged by an eccentric locking member 35 swingable on the machine frame, the said eccentric locking member 35 allowing the locking disc to rotate in one direction (in the direction oit the arrow, Figure 5) but preventing themovement olf said dise in the opposite direction. ln the flange 27 one end ol a cylindrical helical spring 36, Figures l to Band 6, is fastened, the other end being secured lto the nut provided with a projection orshoulder 37, with which a movable rod 23S can co operate, in order to stop the rotation ot the nut 25, when the clutch coupling is to be disconnected.

According to Figure l where the clutch coupling is shown thrown in, the coupling hallz 8 rotates together' with the sleeve 2, the locking disc 80, the screw QG (through the pins 28V) and as a result oli the spring connection 36, also the nut 25 in the direction of the arrow, Figures 4f to 6. The `flange 27 on the screw 26 rests against one side oit the locking disc 30. The outer drum 1l is coupled with and decoupled 'from the inner drinn l() on the rotating sleeve 2 in the inanner described betere, and the rainming head risesand tailsl thus in the usual order. lt

f one now wants to decouple the motor, the rod 38 is moved in snch a 'way that it cooperates with the shoulder on the nut Q5, so that the rotation ot said nut is stopped. As the loczing disc 30 and the screw 2G continue rotating, the nut 25 is c: ised, when prevented iirom rotation, to be moved to the left in Figures l to S along the screw 26, which is'leit threaded, and taires withzit thereby the cou- 'pling hall S.

On account et the relative movement, which thus takes pla between the screw 2G and the nut E25, the spring 36 is tensioned. lt the same time as the nut is movingv to the left, the screw 2li is moved to the right, so that a certain space 'formed between the i'iange 2T and the locking disc 30. lWhen the screw 2li is moving to the right, the pins 28 are also moved, 'and conipress thereby the nut 25 togeti ir with the coupling halt 8 hasbeen moved so far tothe lett that the shoulders (Shave come out of engagement withthe shoulders 7, the compressed springs 33, at the same moment as the engagement between the shoulders ceases, cause the screw the springs 33, Fig. 2. When Y hits the rod 38 during the raising period of the rannning head. As soon as the clutch coupling 1s disengaged, the locking disc 230 therefore begins to rotate in the opposite direction under the action oliV the .ran'nning head suspended in the drum ll, as the drum ll during the raising period oi the ramming head coupled together with the sleeve 2 whereon the locking disc 3G is jannned..

However, such a movement oi the locleiing disc 30 is immediately prevented by the eccentric loclzing member The ramming head remains thus locked in suspended position and the nfl-eter, which is decoupled, runs without load.

lllhen one wants to malte a singleV stroke with the ramming head, the rod 38 is pulled ont oil? engagement with the shoulder 37 and then is iml'nediately moved again into contact position for the same. leihen the rod is pulled out et engagement with the shoulder, the tensioncd spring 3G causes the nut 25 to be screwed to the right in Figures l to 3, thereby moving the coupling hallI S into engagement with the shoulders on the toothed wheel 3, so thatv coupling tales place. rl`he sleeve 2 .is thereby caused to rotate, whereby the drum ll, which is still coupled to the sleevey 2 by means is rotated in such a way, that the ramming headis raised in .lull ramining position and thereafter, when the drum ll isdecoupled Yfrom the sleeve 2, freely falls down. During this time the shoulder 37 hasbeen able to strike the rod 38, so that the coupling is again disconnected in the manner jnst described. The device may evidently be modified in many respects vithin 'the scope ol the invention.

l-l-aving now asl-aryl 'l tl i t c" 1 i r tioi l (rinunci. tic ia me )r my nien i, declare that what l claim is: f

l. lin a machine 'lor controlling the reciprocating movement ot a rainming head operf ated. troni a continuously dri\.fin`,` member, the cor' bin-ation oli a driven member and a elntch vlor coupling and uncoupling the driven niember and source ol l'noivcr,` :i pulley intermittently rotated on said driven member to litt and lower the ramming head, a pivoted member carried by the driven member and :adapted to engage the pulley to rotate the same, means disposed in the path ot movement of' the pivoted member to rotate lthe latter Vinto particularly described and lOl) of the coupling hook 18,'

lll)

and ont oli engagement withV the pulley, and Y means tor engaging the driven portion et the clutch to interrupt movementl of thefdriven member and pulley Without interfering Wit-h continued rotary motion of the source of power. n i

2. ln a rainming machine, a driving mem.- ber and a driven member, an aul'xiii'iatic rain.

lifting and releasing device for'tlie driven member, and a clutch coupling for thetwo .meinbers, comprisinga lined and an axially.

moin-ole unit, screw means turning with the driven member, a coupling normallyturningf with the screw means and capable of movement axially thereof and engaging the movable unit of the clutch to move the same/intol and ont of engagement with the fined unit and thereafter' interlocking with the screw,

and stop movable into engagement with the coupling to arrest rotary movementthereof.

In a ramining machine, a drivingmembei" and driven member, an Vautomat-ic rain lifting and releasing device for the driven member, and a clutch coupling for the tivo members, comprising a fixed and :in-axially movable unit, screw means on the driven memberhaving rot-ary and axial movement therewith, a coupling intermediate the movabie unit and screw means and operatively associated with each, means for arresting rotary movement of the movable unit, blocl turning with the driven member to prevent rotation thereof in the opposite directiomand a connection yieldable axially of the driven member between the block and the screw means. v p l et., In a ramming machine, a driving membei' and a driven member, an automatic ram lifting and releasing device for the driven inembeigand aclutcli-ceupling for the two Y men'ibeis, comprising a fixed and an axially` movable unit, a iianged sleeve loose on the flange of the sleeve and means associated with the block to permit rotary movement thereof in'one direction only.

5. In a ramining machine, a driving member and a tubular driven member, a shaft projecting through the bore of the driven member and having a cam arrangement at one end thereof, a drum integral With the end'of the driven member adjacent the cams, a dog pivotally mounted in the drum anu contacting' With the cams, a winding and an unwinding drum embracing the first drum,`

and'liaving a lug to bey engaged -by the dog to rotate the second drum Withthe ir'st until one of the cams releases the dog from engagevment with lthe lug, and aV clutch coupling for the driving and driven'members, comprising a block keyed to the driven member, ,means associated With the block to permit rotation ofthedriven member in afvvinding direct-ion vfor the first drum, a screw loose on the` driven member,a yieldableconnection between the block and screw whereby the latter is capable of operating axially and in a rotary kdirection with the driven member, a coupling movable K over the screw by relative movement thereof with respect tothe coupling, astop for interrupting rotary movement of the coupling, .a lmovable unitof the clutch arranged on the 4 driven member and engaged by the coupling to operate the unit from the axial movement ofthe coupling and screw, and a fixedunit ofthe clutch integral With the driving ineinber to be engaged and disengaged bythe. mov- -'able unit.

6.,.A ramming machine as claimed in claim 5, including means for rotary adjustment of the shaft'and cams to regulate the fall of a ram by thepoint ativhich the said dog disengages the lug andv releases o the Winding drum. l f f f 7.V A raniming machine, as claimed in claim 8, including a flexibleA yieldable connectiony bet-Ween the screw means and ,coupling forl returning thelatter to permit engagement of the clutch.

Inwitness whereof, I have hereunto signed my name;

ERNST HJALMAR CARLSSON. 

